- Yacht klub Jestřábí, z.s.
- Yacht Club Nautilus Praha
- Yacht klub CERE Plzeň
- Yoki Home, z.s.
- YWCA v České republice v likvidaci
- You can do it!, z.s.
- YMCA Letohrad
- Yacht Club Staré Město Praha, z.s.
- Yes z.s.
- Yacht klub Strážnice, z.s.
- YACHT CLUB Vysoké Mýto z.s.
- Yoga Ostrava, z.s.
- Yachtclub Balaton 24 z.s.
- YACHT CLUB Chrášťany z.s.
- Young snipers team, z.s. "v likvidaci"
- Young Challengers, z.s.
- YMCA Braník
- Youth Business Network
- YogafestZLÍN z.s.
- Yacht Club NEPTUN Komárov z.s.
- YMCA Ostrava-Poruba
- YACHTCLUB BANÍK OSTRAVA
- Youth and Environment Europe Czech Republic
- YACHT CLUB KLADNO z.s.
- YMCA Brno
- Yacht club Ústí nad Labem z.s.
- Yacht Club Velké Dářko o.s.
- YOUnique z.s.
- YACHT CLUB BOHEMIA z. s.
- YMCA Sever, z. s.
- Youth For Future, z.s.
- YACHT CLUB FRYMBURK
- YACHT CLUB REGENT z.s.
- YMCA Jindřichův Hradec
- YESYES z.s.
- YOUTH ROMA PARLIAMENT, z. s. v likvidaci
- YC CoolStar, z.s.
- YAGANA Lucky zone, z.s.
- Yachtmeni, z.s.
- Youth for Youth, z.s.
- Young Leaders CZ z.s.
- Yacht Club Nový Jičín z.s.
- YachtClub Dyje z.s.
- YARD RESORT, z.s.
- YMCA Olomouc
- Yoga fest České Budějovice z. s.
- Yacht club ČSA, v likvidaci
- Yacht club Krnov z.s.
- YOUNG TALENTS, z. s.
- Yale Model Government Europe CZ, o. s.